Ella brown is excited for her first day at Guardian Angel Academy. Along with her brand-new friends Poppy, Tilly, and Jess, Ella gets to slide down rainbows, cast magical spells, and fall asleep on fluffy clouds, all while training to become a guardian angel. But Ella has a flair for trouble, and within a few days she sets off on an adventure to Rainbow's End, a sprkling place that's strictly off-limits to angels-in-training. Can Ella find her way back to school before Archangel Grace realizes she's missing?